Dell Inspiron 1521 (Mid 2007) - Manual (Page 101)

Troubleshooting
101
Troubleshooting
Dell Technical Update Service
The Dell Technical Update service provides proactive e-mail notification of
software and hardware updates for your computer. The service is free and can
be customized for content, format, and how frequently you receive
notifications.
To enroll for the Dell Technical Update service, go to
support.dell.com/technicalupdate.
Dell Diagnostics
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
When to Use the Dell Diagnostics
If you experience a problem with your computer, perform the checks in
"Lockups and Software Problems" on page 120 and run the Dell Diagnostics
before you contact Dell for technical assistance.
It is recommended that you print these procedures before you begin.
NOTE:
The Dell Diagnostics only operates on Dell computers.
Enter system setup program, review your computer’s configuration
information, and ensure that the device you want to test displays in the
system setup program and is active (see "Using the System Setup Program" on
page 189).
Start the Dell Diagnostics from your hard drive or from your Drivers and
Utilities media (see "Drivers and Utilities Media" on page 13).